O označovaní modelov pojednáva dokument CIAM General Rules https://www.fai.org/sites/default/files/documents/sc4_vol_ciam_general_rules_19v2_0.pdf
Konkrétne kapitola C.11.1 Class F – Model Aircraft, bod i.
Model aircraft, except for Indoor Free Flight and Scale, shall carry:
- i) The national identification mark followed by the National FAI licence number or the FAI Unique ID number. The letters and numbers must be at least 25 mm high and appear at least once on each model (on the upper surface of a wing for Free Flight models).
Z textu vyplýva, že model može byť označený alebo NAC číslom licencie (SVKxxxx) alebo FAI ID číslom. Výška textu je min. 25 mm.
